On Fri, Dec 04, 2020 at 09:11:46AM +0800, Jinyang He wrote: > Avoid endless loop if synci_step was zero read by rdhwr instruction. > > Most platforms do not need to do synci instruction operations when > synci_step is 0. But for example, the synci implementation on Loongson64 > platform has some changes. On the one hand, it ensures that the memory > access instructions have been completed. On the other hand, it guarantees > that all prefetch instructions need to be fetched again. And its address > information is useless. Thus, only one synci operation is required when > synci_step is 0 on Loongson64 platform. I guess that some other platforms > have similar implementations on synci, so add judgment conditions in > `while` to ensure that at least all platforms perform synci operations > once. For those platforms that do not need synci, they just do one more > operation similar to nop. > > Signed-off-by: Jinyang He <hejinyang@xxxxxxxxxxx> > --- > arch/mips/kernel/relocate.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) applied to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
